Provn of Joint filling at Tarmac Area at 17 FBSU AF Trivanrdrum

Amount

M&L for Racking out of existing sealant compound and backup rod of the existing joints (construction joints) 10 to 12 mm by special tools like cutting blades/machines, widening of joints by 2 mm (if necessary) using joint cutting blades of appropriate size, straight and smooth edges and apply polyurethane joint sealant in steps as follows complete all as specified and directed :- (a) Existing Joint shall be cleaned thoroughly with application of compressed air, joint shall be made dry, vacuum cleaned and free of dirt,oil, vegitation and other debris (b) Apply two coats of primer with thin brush by forward and backward movement at an interval of 30 minutes before placing the backup rod and pouring the sealant (c) There after Joint shall be filled with closed cell medium density cross linked polyethylene foam backup rod of 12 mm dia for complete length of the joint. (d) Portion above backup rod to be filled with polyurethane joint sealant meeting the requirements mentioned in BS-5212,BS-4254 and EN-141875-2003 with minimum movement accommodation factor (MAF) of +/- 30%. (e) Applying masked tape on the edge of joints and removing the masking after filling of sealant as per method specified by the manufacturer.

Note for item No. 01:- (a)The quoted rate shall be for all the above provisions. (b)The existing sealant compound shall be taken out completely using blow lamp and joint shall be cleaned with wire brush and loose particles dust etc shall be removed by using hand pump before applying primer. (c) Any spillage of material during filling over the slab shall be removed and cleaned by contractor and any damage accrued to the concrete slab will be made good by the contractor without any extra cost to the department.

M&L for Racking out of old existing sealant compound , backup rod and filler board of the existing expansion joints ( 20 to 25 mm ) by special tools like cutting blades/machines, widening of joints by 2 mm by using Joint cutting blades of appropriate size ,straight and smooth edges and apply polyurethane joint sealant in steps as follows complete all as specified and directed :- (a) Existing Joint shall be cleaned thoroughly with application of compressed air, joint shall be made dry, vacuum cleaned and free of dirt, oil, vegitation and other debris . (b) Apply two coats of primer with thin brush by forward and backward movement at an interval of 30 minutes before placing the filler board and pouring the sealant . (c) There after fill the gap with free moulded 25mm thick compressible polyethylene closed cell type filler board as specified (d) Applying masked tape on the edge of joints and removing the masking after filling of sealant as per method specified by the manufacturer. (e) over it fill with closed cell medium density cross linked polyethylene foam backup rod of 30 mm dia for complete length of the joint. (f) Finally filled with polyurethane joint sealant meeting the requirements mentioned in BS-5212,BS-4254 and EN-141875-2003 with minimum movement accommodation factor (MAF) of +/- 30%. Note:- (a)The quoted rate shall be for all the above provisions. (b)The existing sealant compound shall be taken out completely using blow lamp and joint shall be cleaned with wire brush and loose particles dust etc shall be removed by using hand pump before applying primer. (c) Any spillage of material during filling over the slab shall be removed and cleaned by contractor and any damage accrued to the concrete slab will be made good by the contractor without any extra cost to the department.

Demolition of cement concrete (existing PQC) of any description and in any position as per direction of Engineer In Charge including removal of demolished material out side MOD land complete all as specified and directed.

M&L for Providing & Laying Dry lean Concrete (DLC) 150 mm thick of aggregate gradation as per Table 1 of SP 49:2014 having 7 day average compressive strength not less than 7 Mpa. Minimum cement content not less than 140 Kg/Cum DLC mixed in Batching Plant, transprted to site and laid by electronic sensor paver including spreading and compacting using high amplitude tamping bars of paver (initial compaction) further by double drum smooth wheeled vibratory rollers with 80-100 KN static weight to achieve minimum dry density not less than 98% of maximum Dry Density, necessary finishing etc complete all as specified and tolerances to be as per Table 900-1 of MoRTH specifications for Road and Bridge work 2013.

S&F one layer of polythene film (transparent colour) 400 micron thickness (Virgin quality) water proof, wrinkle free without puncture having minimum weight 390 gm/Sqm as per ASTM D2103/IS 2508 laid over and including 10mm thick (compacted) sand cushion , with side and end overlapping not less than 300mm between adjacent strips and at traverse joints all as approved by GE. Note:- (a) Measurement shall be taken for net area and unit rate quoted shall deemed to include for over lapping. (b) Unit rate quoted shall be deemed to include for sand cushion incl proper consolidation & punning. The thickness 100mm shall be thickness after consolidation.

M & L Pavement Quality Cement Concrete (PQC) of minimum 28 days field Flexural strength of 45Kg /Sqcm or 4.5 Mpa, aggregate gradation as per Table 3 of IRC 15-2017, coarse aggregate of clean, hard strong, dense, non-porous and durable pieces of crushed stone or gravel, fine aggregates of clean natural sand or crushed stone sand or combination of both using minimum 400 Kg/cum of cement with non-circular, virgin synthetic fibre of 12-18 mm length, specific gravity 1.34 to 1.39, UV stable, alkali resistant, with equivalent dia 15-40 micron, minimum melting temperature as 240°C and minimum tensile strength of 300 Mpa and at the rate as specified by the manufacturer. PQC laid, spread and compacted with suitable paver, including curing and tining by Texturing cum Curing Machine complete all as specifed and directed. Required surface texturing to be done as specified in Clause 10.1.14 and Table 9 of IRC:15-2017

Note for item No. 06 :- (a) Construction Joints/dummy joints and expansion joints shall be measured and paid seperately under respective items. (b) Deduction shall be made in computing concrete quantity for expansion joints. (c) Contractor shall consider 400 kg of cement per cum of concrete while quoting this item. The actual quantity of cement shall be used as per approved design mix. No price adjustment shall be applicable for excess quantity of cement content i.e beyond 400 kg as per approved design mix in execution of work (d) Non circular synthetic fiber shall be mixed in the " PQC" @ 0.25% of cement all as per manufacturers instructions and as directed by Engr-in-charge. (e) Supply only of POLYESTER TRIANGULAR/non circular synthetic fibre shall be measured and paid seperately. (f) Cost of brooming and belting shall be measured and paid seperately. (g) Cost of steel formwork and testing as specified shall be deemed to included in the rate quoted by the tenderer (h)Maximum working temperature shall not exceed 30 degree centigrade of atmosphere.

M&L for preparation of new or previously treated concrete surfaces and painting lines, dashes, arrows, letters etc exceeding 10 cm width with two coat of approved water based road marking paint colour white, Golden yellow, deep orange, black & grey as per the requirement in the Air Field complete all as specified and directed. Make of road marking paint : M/s Asian paints, M/s Johnson and Nicholson, M/s Berger paints, Note:- The work to be executed by using mechanical pavement marking machine including necessary DG Set required to operate the machine

M&L for preparation of new or previously treated concrete surfaces and painting lines, dashes, arrows, letters etc not exceeding 10 cm width with two coat of approved water based road marking paint colour white, Golden yellow, deep orange, black & grey as per the requirement in the Air Field complete all as specified and directed. Make of road marking paint : M/s Asian paints, M/s Johnson and Nicholson, M/s Berger paints, Note:- The work to be executed by using mechanical pavement marking machine including necessary DG Set required to operate the machine

Rough excavation not exceeding 1.5 m in depth and getting out in soft / loose soil. (Note:- The Earth cutting shall be derived based on level difference and volume shall be worked out based on prismoidal formula)

M&L Hard-core of broken stone boulders of gauge n exc. 63 mm, deposited, spread and levelled in layers n exc. 15 cm thick, watered and rammed to a true surface all as specified and directed.

M&L for coarse aggregate for granolithic floors graded from 12.5mm to 4.75mm under floors or in foundations spreading and levelling in layers n exc. 25 cm thick and well ramming including watering as required complete all as specified and directed.

M&L for machine pressed precast concrete coloured interlocking paver block (factory made) any shape and size conforming to IS 15658-2006 of 80mm thickness M-40 Grade with grey cement and pigment complete all as specified and as directed by Engr-in-Charge.

M&L for 100mm thick PCC 1:4:8, type D-2 using 40 mm graded stone aggregate complete all as specified and as directed by Engr-in-Charge.

M&L for repair of concrete slab or pavement damaged /spoiled edges/surfaces (rectangular section), removing all loose and foreign material and disposing off the same to a distance exc. 200 m but n.exc 500 m and cleaning the surface and filling with epoxy resin concrete all as per manufacturer's instruction including necessary formwork complete all as specified and directed. Note: - Epoxy resin concrete shall be with "QUARTZ" sand and hardener.

M&L for repair of concrete slab or pavement damaged / spoiled edges / surfaces cut to rectangular section (in small patches), removing all loose and foreign material and disposing off the same to a distance exc. 200 m but n. exc 500 m and cleaning the surface and filling ELASTOMERIC CONCRETE all as per manufacturer's instruction including necessary form work complete all as specified and directed. Note: Elastomeric Concrete shall be with "QUARTZ" with fibre and hardener.

M & L Cutting of construction joints 25 mm deep and 10 mm wide by early saw cut using diamond bit cutter of appropriate size, straight and smooth edges. Joint cleaned thoroughly with application of compressed air. Joint shall be made dry, vacuum cleaned and free of dirt, oil, vegetation and other debris. Application of two coats of primer with thin brush by forward and backward movement at an interval of 30 minutes before placing the backup rod and pouring the sealant. Placing of closed cell, medium density, crossed linked polyethylene foam backup rod of 12 mm dia, application of bond breaker tape on top of back up rod for complete width of the joint and filled with polyurethane based sealant complying with BS-5212, BS 4254 and EN-141875-2003 with minimum movement accommodation factor (MAF) of +/- 30% having minimum 10 year performance guarantee, applying masked tape on the edges of joints and removing the masking tape after filling of sealant as per the method specified by the manufacturer complete as specified and directed.

M&L Forming 25 mm width expansion joint in concrete slab for full depth of PQC. Early entry saw and subsequent cutting by using diamond bit cutter of appropriate size, straight and smooth edges. Joint cleaned thoroughly with application of compressed air. Joint shall be made dry, vacuum cleaned and free of dirt, oil, vegetation and other debris. The joint then filled with pre-molded 25 mm thick compressible polyethylene closed cell type filler board as specified, thereafter application of two coats of primer with thin brush by forward and backward movement at an interval of 30 minutes before placing the backup rod and pouriing the sealant. Placing of closed cell, medium density, crossed linked polyethylene foam backup rod of 30 mm dia, over filler board and filled with polyurethane based sealant complying with BS-5212, BS 4254 and EN-141875-2003 with minimum movement accommodation factor (MAF) of +/- 30% having minimum 10 year performance guarantee, applying masked tape on the edges of joints and removing the masking tape after filling of sealant as per the method specified by the manufacturer complete as specified and directed.

M&L Forming dummy/ contraction joint with an initial saw cut of 3 mm soon after the concrete has set, upto a depth of 1/3rd to 1/4th the thickness of the slab, widening the first saw cut to 6 mm and 24 mm deep by using diamond bit cutter of appropriate size, straight and smooth edges. Joint cleaned thoroughly with application of compressed air. Joint shall be made dry, vacuum cleaned and free of dirt, oil, vegetation and other debris. Application of two coats of primer with thin brush by forward and backward movement at an interval of 30 minutes before placing the backup rod and pouring the sealant. Placing of closed cell, medium density, crossed linked polyethylene foam backup rod of 8 mm dia, application of bond breaker tape on top of back up rod for complete width of the joint and filled with polyurethane based sealant complying with BS-5212, BS 4254 and EN-141875-2003 with minimum movement accommodation factor (MAF) of +/- 30% having minimum 10 year performance guarantee, applying masked tape on the edges of joints and removing the masking tape after filling of sealant as per the method specified by the manufacturer complete as specified and directed.

DEFT GROUP ELECTROMECHANICAL (BID ID -3135185)

mahadeva traders cotractor and suppliers (BID ID -3140584)